Suitable beam polarimeter concepts for the TESLA linear collider have been investigated. A specific Compton polarimeter design is proposed.
研究了适用于特斯拉直线对撞机的光束偏振计概念。提出了一种特殊的康普顿偏振计设计方案。
{"title":"Polarimeter studies for TESLA","authors":"K. Schüler","doi":"10.1063/1.1394418","DOIUrl":"https://doi.org/10.1063/1.1394418","url":null,"abstract":"Suitable beam polarimeter concepts for the TESLA linear collider have been investigated. A specific Compton polarimeter design is proposed.","PeriodicalId":325505,"journal":{"name":"Physics and experiments with future linear e+ e- colliders","volume":"140 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132901324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The calorimeter performances are crucial for physics in the next linear collider detector. Full event simulation is required to allow complete reconstruction and energy flow analysis to evaluate the current designs. We summarize and report the status of the electromagnetic and the hadronic calorimeters full simulation developed with the Geant4 framework for the TESLA project.
{"title":"Calorimeter studies with Geant4","authors":"P. D. Freitas","doi":"10.1063/1.1394401","DOIUrl":"https://doi.org/10.1063/1.1394401","url":null,"abstract":"The calorimeter performances are crucial for physics in the next linear collider detector. Full event simulation is required to allow complete reconstruction and energy flow analysis to evaluate the current designs. We summarize and report the status of the electromagnetic and the hadronic calorimeters full simulation developed with the Geant4 framework for the TESLA project.","PeriodicalId":325505,"journal":{"name":"Physics and experiments with future linear e+ e- colliders","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133421023","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We discuss the energy measurement requirements for the physics program at a next generation linear collider. The SLC energy spectrometer and its performance are described. We conclude that there may be a use for a modification of this spectrometer in the extraction line, but that the primary energy measurement should be integrated into the accelerator. It will be difficult to achieve the accuracy desired for some of the physics objectives.
{"title":"Beam energy measurement at a linear collider with an SLC style energy spectrometer","authors":"S. Hertzbach","doi":"10.1063/1.1394417","DOIUrl":"https://doi.org/10.1063/1.1394417","url":null,"abstract":"We discuss the energy measurement requirements for the physics program at a next generation linear collider. The SLC energy spectrometer and its performance are described. We conclude that there may be a use for a modification of this spectrometer in the extraction line, but that the primary energy measurement should be integrated into the accelerator. It will be difficult to achieve the accuracy desired for some of the physics objectives.","PeriodicalId":325505,"journal":{"name":"Physics and experiments with future linear e+ e- colliders","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126961182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Two main topics were discussed in the muon and special detector parallel session: the design of a muon filter/identifier for a general purpose detector, and the physics requirements and possible implementation of hadron identification. As far as the first part is concerned, general design, active detector specialized reports and existing apparata performances were presented. Regarding hadron identification, both the need of such a capability for a general purpose apparatus, and possible devices were discussed.
{"title":"Muon and special detectors summary","authors":"M. Piccolo","doi":"10.1063/1.1394442","DOIUrl":"https://doi.org/10.1063/1.1394442","url":null,"abstract":"Two main topics were discussed in the muon and special detector parallel session: the design of a muon filter/identifier for a general purpose detector, and the physics requirements and possible implementation of hadron identification. As far as the first part is concerned, general design, active detector specialized reports and existing apparata performances were presented. Regarding hadron identification, both the need of such a capability for a general purpose apparatus, and possible devices were discussed.","PeriodicalId":325505,"journal":{"name":"Physics and experiments with future linear e+ e- colliders","volume":"74 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116418999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The Higgs branching ratio measurement is a premier goal of the next Linear Collider physics program. Variations of a CCD vertex detector have been studied to assess the impact of inner radius and hit precision on the measurement of the Higgs branching ratios. A small dependence is found when the beampipe radius is varied between 1.2 cm and 2.4 cm, and the hit precision between 3 μm and 5 μm.
{"title":"Linear Collider vertex detector optimization for Higgs branching ratio measurements","authors":"J. Brau, C. Potter, M. Iwasaki","doi":"10.1063/1.1394428","DOIUrl":"https://doi.org/10.1063/1.1394428","url":null,"abstract":"The Higgs branching ratio measurement is a premier goal of the next Linear Collider physics program. Variations of a CCD vertex detector have been studied to assess the impact of inner radius and hit precision on the measurement of the Higgs branching ratios. A small dependence is found when the beampipe radius is varied between 1.2 cm and 2.4 cm, and the hit precision between 3 μm and 5 μm.","PeriodicalId":325505,"journal":{"name":"Physics and experiments with future linear e+ e- colliders","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121778325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We study production of tt via W+W−-fusion, including the relevant backgrounds at the proposed Linear Collider (an e+e− collider with S=1.5 TeV) in the context of a Higssless Standard Model (HSM), i.e. a nonlinear SU(2)L×U(1)Y chiral Lagrangian, including dimension five W+W−tt interactions. Deviation from the HSM predictions can be used to constrain the coefficients of these operators to an order of 10−1 (divided by the cut-off scale Λ=3.1 TeV) with a 95% C.L..
{"title":"Anomalous W+W−tt̄ Couplings at the LC","authors":"T. Tait","doi":"10.1063/1.1394381","DOIUrl":"https://doi.org/10.1063/1.1394381","url":null,"abstract":"We study production of tt via W+W−-fusion, including the relevant backgrounds at the proposed Linear Collider (an e+e− collider with S=1.5 TeV) in the context of a Higssless Standard Model (HSM), i.e. a nonlinear SU(2)L×U(1)Y chiral Lagrangian, including dimension five W+W−tt interactions. Deviation from the HSM predictions can be used to constrain the coefficients of these operators to an order of 10−1 (divided by the cut-off scale Λ=3.1 TeV) with a 95% C.L..","PeriodicalId":325505,"journal":{"name":"Physics and experiments with future linear e+ e- colliders","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127078414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
An object-oriented framework for undertaking clustering algorithm studies has been developed. We present here the definitions for the abstract Cells and Clusters as well as the interface for the algorithm. We intend to use this framework to investigate the interplay between various clustering algorithms and the resulting jet reconstruction efficiency and energy resolutions to assist in the design of the calorimeter detector.
{"title":"Clustering algorithm studies","authors":"N. Graf","doi":"10.1063/1.1394455","DOIUrl":"https://doi.org/10.1063/1.1394455","url":null,"abstract":"An object-oriented framework for undertaking clustering algorithm studies has been developed. We present here the definitions for the abstract Cells and Clusters as well as the interface for the algorithm. We intend to use this framework to investigate the interplay between various clustering algorithms and the resulting jet reconstruction efficiency and energy resolutions to assist in the design of the calorimeter detector.","PeriodicalId":325505,"journal":{"name":"Physics and experiments with future linear e+ e- colliders","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127866652","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In some SUSY extensions of the Standard Model superpartner of t-quark may form bound states. We estimate potentials of future linear collider in search for these new narrow strong resonances, considering the e+e− and γγ options.
{"title":"Potentials of LC in stoponium searches","authors":"D. Gorbunov, V. Ilyin, V. Telnov","doi":"10.1063/1.1394393","DOIUrl":"https://doi.org/10.1063/1.1394393","url":null,"abstract":"In some SUSY extensions of the Standard Model superpartner of t-quark may form bound states. We estimate potentials of future linear collider in search for these new narrow strong resonances, considering the e+e− and γγ options.","PeriodicalId":325505,"journal":{"name":"Physics and experiments with future linear e+ e- colliders","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117170672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Beam background hits due to pair-background in JLC detector models with different magnetic field, mask design, and position of final quadrupole magnets have been estimated. Preliminary design of the beam dump line is described and the background generated by the lost beam in the dump line is also estimated.
{"title":"New JLC mask system at B=3T","authors":"Y. Sugimoto, K. Kubo","doi":"10.1063/1.1394410","DOIUrl":"https://doi.org/10.1063/1.1394410","url":null,"abstract":"Beam background hits due to pair-background in JLC detector models with different magnetic field, mask design, and position of final quadrupole magnets have been estimated. Preliminary design of the beam dump line is described and the background generated by the lost beam in the dump line is also estimated.","PeriodicalId":325505,"journal":{"name":"Physics and experiments with future linear e+ e- colliders","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117319049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
We study the production at future e+e− linear colliders of the heavy neutral Higgs bosons H and A of the minimal supersymmetric standard model in association with top and bottom quarks. The cross sections have a strong dependence on the parameter tan β, and thus provide a good way to determine it. At a linear collider with s=0.5–1 TeV and expected integrated luminosities, we find significant sensitivities for determining tan β. In the Supergravity scenario, the sensitivity is particularly strong for tan β≳10, reaching a 15% or better measurement. In the general MSSM scenario, the interplay between the 4b and 4t channels results in a good determination for tan β≲10, while the sensitivity is weakened for higher values of tan β.
{"title":"tan β determination from heavy Higgs boson production at linear colliders","authors":"Jing Jiang","doi":"10.1063/1.1394325","DOIUrl":"https://doi.org/10.1063/1.1394325","url":null,"abstract":"We study the production at future e+e− linear colliders of the heavy neutral Higgs bosons H and A of the minimal supersymmetric standard model in association with top and bottom quarks. The cross sections have a strong dependence on the parameter tan β, and thus provide a good way to determine it. At a linear collider with s=0.5–1 TeV and expected integrated luminosities, we find significant sensitivities for determining tan β. In the Supergravity scenario, the sensitivity is particularly strong for tan β≳10, reaching a 15% or better measurement. In the general MSSM scenario, the interplay between the 4b and 4t channels results in a good determination for tan β≲10, while the sensitivity is weakened for higher values of tan β.","PeriodicalId":325505,"journal":{"name":"Physics and experiments with future linear e+ e- colliders","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2001-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114394899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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